Cargo and door sensor

Abstract

Implementations for a system to receive a message indicating that an ambient light level measured by an ambient light sensor within a container exceeds a first threshold value or falls below a second threshold value; in response to the message indicating that the ambient light level exceeds the first threshold value, activate a cargo sensor; and in response to the message indicating that the ambient light level falls below the second threshold value, de-activate the cargo sensor.

What is claimed is: 
     
       1. A system comprising:
 a memory device to store instructions; and 
 a processing device operatively coupled to the memory device, the processing device to execute the instructions to: 
 receive, from a light sensor, a first reading indicating a first light level in a container comprising a container door; 
 determine the container door is open in view of the first light level exceeding a first threshold value; 
 receive, from the light sensor, a second reading indicating a second light level in the container; and 
 determine the container door is closed in view of the second light level falling below a second threshold value. 
 
     
     
       2. The system of  claim 1 , the processing device to:
 de-activate a cargo sensor in view of the second light level falling below the second threshold value. 
 
     
     
       3. The system of  claim 1 , the processing device to:
 activate a cargo sensor in response to the first light level exceeding the first threshold value; and 
 collect, by the cargo sensor, a sample indicating a cargo state of the container, wherein the cargo state is at least one of empty, load initiated, unload initiated, or loaded. 
 
     
     
       4. The system of  claim 1 , the processing device to determine the first light level exceeds the first threshold value when a predetermined number of samples of the first light level exceed the first threshold value during a time window. 
     
     
       5. The system of  claim 1 , the processing device to determine a cargo area of the container is not secure when the first light level exceeds the first threshold value and a rate of motion exceeds a first motion threshold value. 
     
     
       6. A method comprising:
 receiving, from a light sensor, a first reading indicating a first light level in a container comprising a container door; 
 determining, by a processing device, the container door is open in view of the first light level exceeding a first threshold value; 
 receiving, from the light sensor, a second reading indicating a second light level in the container; and 
 determining the container door is closed in view of the second light level falling below a second threshold value. 
 
     
     
       7. The method of  claim 6 , further comprising:
 de-activating a cargo sensor in view of the second light level falling below the second threshold value. 
 
     
     
       8. The method of  claim 6 , further comprising:
 activating a cargo sensor in response to the first light level exceeding the first threshold value; and 
 collecting, by the cargo sensor, a sample indicating a cargo state of the container, 
 wherein the cargo state is at least one of empty, load initiated, unload initiated, or loaded. 
 
     
     
       9. The method of  claim 6 , wherein determining the first light level exceeds the first threshold value comprises determining a predetermined number of samples of the first light level exceeds the first threshold value during a time window. 
     
     
       10. The method of  claim 6 , further comprising determining a cargo area of the container is not secure when the first light level exceeds the first threshold value and a rate of motion exceeds a first motion threshold value. 
     
     
       11. A non-transitory machine-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to:
 receive, from a light sensor, a first reading indicating a first light level in a container comprising a container door; 
 determine the container door is open in view of the first light level exceeding a first threshold value; 
 receive, from the light sensor, a second reading indicating a second light level in the container; and 
 determine the container door is closed in view of the second light level falling below a second threshold value. 
 
     
     
       12. The non-transitory machine-readable storage medium of  claim 11 , the processing device to:
 de-activate a cargo sensor in view of the second light level falling below the second threshold value. 
 
     
     
       13. The non-transitory machine-readable storage medium of  claim 11 , the processing device to collect a sample indicating a cargo state of the container, wherein the cargo state is at least one of empty, load initiated, or loaded. 
     
     
       14. The non-transitory machine-readable storage medium of  claim 11 , the processing device to determine the first light level exceeds the first threshold value when a predetermined number of samples of the first light level exceeds the first threshold value during a time window. 
     
     
       15. The non-transitory machine-readable storage medium of  claim 11 , the processing device to determine a cargo area of the container is not secure when the first light level exceeds the first threshold value and a rate of motion exceeds a first motion threshold value.